Yeah, not very sensible. The only thing that occurs to me is, maybe it makes rights management easier in some way (i.e. it may be easier to stop a complete app running at a predetermined time or on another device than it would be to do the same thing with one app and individual comics files) ? I say that as the one techy left on the planet that's not learning how to write iPhone apps though so it's quite likely i'm talking out of my arse.

Presumably there's some rationale behind it though or else why do it that way ?